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What does “no bag shape” mean in a process flow diagram?

2008-05-17 View Original

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I often see the term “bagless” in process flow diagrams, and I would like to ask what it actually means What is it for? ? This post was last edited by Pacific on 2008-5-19 18:15]
Reply #2 2008-05-18
The English term is “NO POCKET”; “no bag shape” means that there are no U-shaped tubes or similar elements in this pipeline, and the purpose of this design is to prevent the formation of a liquid seal within the pipeline. It is generally used in exhaust pipelines
Reply #3 2008-05-18
This question has troubled me for a long time, and to this day that’s still how I understand it
Reply #4 2008-05-18
It seems that this is how we all understand it: the pipeline layout should not have low points in passages that resemble pockets. Agree with the answer from the second floor
Reply #5 2008-05-19
This question has also troubled me for a long time; thank you :)
Reply #6 2009-04-22
“\"Bagless\" means that there are no U-tubes or similar elements in this section of the pipeline, and the main purpose is to prevent the formation of a liquid seal within the pipeline
Reply #7 2009-04-22
It generally refers to the fact that the steam condensate and the vent pipes of the tower should not have pouch-like structures; in my opinion, there should be no areas that form sort of ‘pockets’ in order to prevent pressure buildup and the release of steam (secondary steam and non-condensable gases)!

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